Stowage/cpython
2
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-12-08 06:10:17 +00:00
Code Issues Projects Releases Packages Wiki Activity

gh-104572: Improve error messages for invalid constructs in PEP 695 contexts (#104573)

Browse source
This commit is contained in:
Jelle Zijlstra 2023-05-17 06:05:42 -07:00 • committed by GitHub
parent 0cb2fdc621
commit 97db2f3e07
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
3 changed files with 68 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

62
Lib/test/test_syntax.py
View file

@ -1877,6 +1877,68 @@ def f(x: *b)
^^^^^^^^^^^
SyntaxError: bytes can only contain ASCII literal characters
Invalid expressions in type scopes:
>>> type A[T: (x:=3)] = int
Traceback (most recent call last):
...
SyntaxError: named expression cannot be used within a TypeVar bound
>>> type A[T: (yield 3)] = int
Traceback (most recent call last):
...
SyntaxError: yield expression cannot be used within a TypeVar bound
>>> type A[T: (await 3)] = int
Traceback (most recent call last):
...
SyntaxError: await expression cannot be used within a TypeVar bound
>>> type A[T: (yield from [])] = int
Traceback (most recent call last):
...
SyntaxError: yield expression cannot be used within a TypeVar bound
>>> type A = (x := 3)
Traceback (most recent call last):
...
SyntaxError: named expression cannot be used within a type alias
>>> type A = (yield 3)
Traceback (most recent call last):
...
SyntaxError: yield expression cannot be used within a type alias
>>> type A = (await 3)
Traceback (most recent call last):
...
SyntaxError: await expression cannot be used within a type alias
>>> type A = (yield from [])
Traceback (most recent call last):
...
SyntaxError: yield expression cannot be used within a type alias
>>> class A[T]((x := 3)): ...
Traceback (most recent call last):
...
SyntaxError: named expression cannot be used within the definition of a generic
>>> class A[T]((yield 3)): ...
Traceback (most recent call last):
...
SyntaxError: yield expression cannot be used within the definition of a generic
>>> class A[T]((await 3)): ...
Traceback (most recent call last):
...
SyntaxError: await expression cannot be used within the definition of a generic
>>> class A[T]((yield from [])): ...
Traceback (most recent call last):
...
SyntaxError: yield expression cannot be used within the definition of a generic
"""
import re